326148704640 has 576 divisors, whose sum is σ = 1310791416480. Its totient is φ = 74412687360.

The previous prime is 326148704611. The next prime is 326148704689. The reversal of 326148704640 is 46407841623.

326148704640 is a `hidden beast` number, since 32 + 61 + 487 + 0 + 46 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11834557 + ... + 11862083.

Almost surely, 2^326148704640 is an apocalyptic number.

326148704640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326148704640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655395708240).

326148704640 is an abundant number, since it is smaller than the sum of its proper divisors (984642711840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

326148704640 is a wasteful number, since it uses less digits than its factorization.

326148704640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27591 (or 27565 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 326148704640 in words is "three hundred twenty-six billion, one hundred forty-eight million, seven hundred four thousand, six hundred forty".